The J-PARC MR's Machine Protection System (MR-MPS) was introduced from the start of beam operation in 2008. Since then, MR-MPS has contributed to the improvement of safety including stable operation of the accelerator and the experiment facilities. The present MR-MPS needs to be reviewed from the aspects such as increase of connected equipment, addition of power supply building, flexible beam abort processing, module uniqueness, service life etc. In this paper, we show the performance of MR-MPS and show future consideration of upgrade.

The reliable and stable operation of the accelerator is the premise and foundation of physics experiments. For example, in the BEPCII, the fault of the magnet power supply front-end electronics devices may cause accelerator energy instability and even lead to beam loss. Therefore, it is very necessary to diagnose and locate the device fault accurately and rapidly, that will induce the high cost of the accelerator operation. Faults diagnosis can not only improve the safety and reliability of the equipment, but also effectively reduce the equipment's cycle costing. The multi-signal flow model proposed by Pattipati K.R is considered as the preferred method of industrial equipment faults detection. However, there are still some problems about fault probability conflict in the processing of correlation matrix diagnosis due to the hierarchical nature of multi-signal flow modeling. Thus we develop the fault diagnosis strategy based on the important prior knowledge of the fault. This method is applied to the front-end electronic devices of BEPCII magnet power supply control system and improves the fault diagnosis and analysis ability of magnet power supply control system.

TLS (Taiwan light Source) is a 1.5 GeV synchrotron light source at NSRRC which has been operating for users more than twenty year. There are many toolkits that are delivered to find out downtime responsibility and processing solution. New alarm system with EPICS interface is also applied in these toolkits to keep from machine fail of user time in advance. These toolkits are tested and modified in the TLS and enhance beam availability. The relative operation experiences will be migrated to TPS (Taiwan photon source) in the future after long term operation and big data statistic. These analysis and implement results of system will be reported in this conference.

The high brilliance Gamma Beam System (GBS) at ELI-NP will deliver quasi-monochromatic gamma beams with a high spectral density (10, 000 photons/s/eV) and high degree of linear polarization (>95%). The Gamma Beam Delivery and Diagnostics (GBDD) of ELI-NP is implemented to deliver the gamma beams to the experimental setups and to monitor the characteristics of the beams. An EPICS control system is developed for the GBDD to support two main categories of equipment: i) equipment for the delivery of the gamma beam including vacuum systems, collimators, alignment platforms, and moveable beam dumps; ii) devices to be used during the operation of the GBS for diagnostics and monitoring including digitizers, power supplies, detectors, and profile system. High-level applications for the Gamma Beam diagnostics system are under development to complement the real-time measurements and monitoring including energy spread measurement, flux and polarization measurement, spatial profile monitor and time structure monitor. This paper describes all the aspects of the EPICS Control System for ELI-NP GBDD, including the hardware integration, network architecture, and high-level applications.

In Budker Institute of Nuclear Physics is being developed linear induction accelerator with beam energy 20MeV (LIA-20) for radiography. Distinctive feature of this accelerator in protection scope is existence both machine, person protection and experiment protection system. Main goal of this additional system is timely experiment inhibit in event of some accelerator faults. This system based on uniform protection controllers in VME form-factor which connected to each other by optical fiber. By special lines protection controller fast receive information about various faults from accelerator parts like power supplies, magnets, vacuum pumps and etc. Moreover each pulse power supply (modulator) fast send its current state through special 8 channel interlock processing board, which is base for modulator controller. This system must processing over 4000 signals for decision in several microseconds for experiment inhibit or permit.interlocks VME LIA-20 protection

The reliable protection of the ESS equipment is important for the success of the project. This requires multiple systems and subsystems to perform the required protection functions that prevent undesired hazardous events. The complexity of the machine, the different technical challenges and the intrinsic organisational difficulties for an in-kind project like ESS impose serious challenges to the distributed Machine Protection strategy. In this contribution, the difficulties and adopted solutions are described to exemplify the technical challenges encountered in the process.

The I10 beamline at Diamond Light Source is configured to study circular dichroism. To increase signal to noise ratio between the two beam polarisations and increase temporal resolution the beamline is fed by two separate IDs that are typically configured with opposite handed polarisations. A chicane of steering magnets with programmable power supplies is used to provide 10 Hz switching between the two photon beams by producing a dynamic closed bump that alternates the on-axis trajectory of the electron beam between the two IDs. In order to maintain the closed bump and make the switching transparent to the rest of the photon beamlines the phase and amplitude of the sine functions applied to the chicane magnets must be exactly correct. In this paper the linear scheme that was used to correct the residual 10 Hz orbit distortion is presented. Future work that uses the fully programmable nature of the magnet power supply controllers to correct high order distortions is also discussed.

Funding:This work was supported by JSPS KAKENHI Grant Number 26800153.The Hadron Experimental Facility is designed to handle an intense slow-extracted proton beam from the 30-GeV Main Ring of the Japan Proton Accelerator Research Complex (J-PARC). We have developed a new control system of a magnet power supply to work with a Programmable Logic Controller (PLC). The control PLC handles the status of the interlock signals between a power supply and a magnet, and monitors the output voltage and the current. The PLC also controls a programmable reference voltage to regulate the output current. In addition, we have been developing an automatic orbit-correction program with the control system of the magnet power supply. The previous data of the beam profile monitors located on the upstream side of the beam dump and the temperature distribution on the beam dump show a possibility of the automatic correction of the beam orbit to the beam dump. The optimized current for the horizontal steering magnet was calculated from the horizontal displacement of the proton beam measured with the beam profile monitors. This paper reports the current status of the power supply control system which can automatically correct the horizontal beam position at the beam dump.

On the HI-13 tandem accelerator, steer power supply and quadrupole lens power supply provides three different types of control interface, Remote control system of these power supplies implemented by using Siemens S7 series PLC, serial server, OPC server and WINCC, Long-time operation show that the control system is easy to be operated and its performance is reliable. Keywords: HI-13, power supply control system, WINCC

Toward the SPring-8 upgrade, which we call SPring-8-II, new innovative technologies are introduced at a control framework, a platform, and a fieldbus. We adopted EtherCAT having a master/slave topology as a network based fieldbus. Since a cyclic data transfer time is less than 1msec, EtherCAT can be provided enough performance for a fast control and a feedback system. Synchronization between slaves can be realized easily by the distributed clock technology. Controllers and sensors are set near equipment, and input and output data to/from a master via an Ethernet cable. It reduces the number of wires and the working time for wiring. In 2016, we installed EtherCAT into three types of equipment control systems. One was a prototype digital LLRF system in the high power rf test stand at SPring-8. Another was sub-encoder readout for an undulator at SPring-8. The other was a control system for a kicker magnet power supply at SACLA. An XMC typed EtherCAT Master module was implemented into each of these systems and connected to multi vendor slaves. In this paper, we report the status of new control system using the EtherCAT technology and future plan.

The operational log system is one of the electric log systems for recording and viewing the accelerator operation time and contents of an operated device. Zlog (Zope-based log system)* developed by KEK was utilized for the RIBF control system. Zope is an open-source Web server and Web application framework written in Python. Using the Web application, information on accelerator operation is designated by a character string on Web browsers. However, the displayed string character on the Web browser will be complex for accelerator operators because many parameters are changed in accelerator operation, though the Web-based system has many advantages. For smoother accelerator operation, an ergonomically designed operational log system is required. Therefore, we developed a new operational log system for RIBF control system. The new system is possible to provide operational logs with a variety of rich GUI components. As of now, the operational log system has been working for accelerator operation by monitoring approximately 3,000 points as the EPICS record without any serious problem.*K. Yoshii et al.: Proc. ICALEPCS07, (2007), p. 299.

This article introduce a project for upgrading the control system of the main booster power supplies of ALBA synchrotron. A brief description of the booster power supplies and the motivation for this upgrade is given. The several options for the upgrade that are being evaluated are discussed. Different possible architectures are also presented. Finally, conclusions about how to face this kind of project are given.

The project of the control system of linear induction accelerator LIA-20 for radiography is presented in this paper. The accelerator is a complex pulsed machine designed to provide a series of three consecutive electron pulses with an energy up to 20 MeV, current 2 kA and lateral beam size less then 1 mm. To allow reliable operation of the whole complex, coordinated functioning of more then 700 devices must be guaranteed in time frames from milliseconds to several nanoseconds. Total number of control channels exceeds 6000. The control system is based on a variety of specially developed VME and CAN modules and crates. Tango program infrastructure is used. The first stage of commissioning will take place in the end of 2017 and will include launching 5 MeV version of the accelerator.

Funding:IAEA.SESAME is a synchrotron light source located in Allan, Jordan. It is expected to become operational in late 2017. Storage ring is currently under commissioning. SESAME's control systems are based on EPICS used for developing both soft and hard IOCs. Control System Studio (CSS) is used to build the graphical user interfaces. PLCs are used in machine protection and personal safety systems. VME is used in timing and power supplies control systems. This paper presents progress made in design and development of the Storage ring's control systems including: vacuum, power supplies, RF, diagnostics, cooling, MPS, PSS and timing systems.

Control system was operated near three years to support commissioning and operation of the TPS. Experiences accumulated in last three years in hardware, software have been confirmed it can fulfil its mission. Functionality and reliability were improved during last three years. Long term strategic for performance improvement and maintenance are revised. Efforts will be summarized in this reports.

System on a chip (SoC) based system widely apply for accelerator control recently. These system with small footprint, low-cost with powerful CPU and rich interface solution to support many control applications. SoC based system running Linux operation system and EPICS IOC embedded to implement several applications. TPS (Taiwan Photon Source) adopts some SoC solutions in control system, includes alarm announcer, RadFET reader, frequency and divider control, power supply control, etc. The efforts for implementing are summarized in this paper.

TPS started its user service in 2016. To ensure stable beam can delivery to user, the fast orbit feedback system were deploy to ensure stable orbit. The system have been commissioning in the second quarter of 2016. Improvement of the system since then solved various problems unexpected. This report will summarizes system configuration of the fast orbit feedback and the operation experiences.

The Iranian Light Source Facility which is currently under design is a new 3 GeV third generation synchrotron light source. The storage ring circumference is 538 m. The conceptual design of power supply control system is presented in this paper which contain control system architecture, software toolkit and controller in device layer of the power supply.

Funding:IAEASESAME is a 2.5 GeV synchrotron light source located in Allan, Jordan. It is expected to become operational in late 2017. Storage ring is currently under commissioning. The main components of the control systems software side are: IOCs developed using EPICS toolkit, operator interfaces (OPIs) designed using Control System Studio (CSS), process variables archiving using CSS BEAUTY toolkit, alarm handling using CSS BEAST toolkit and tools to help in automation and reporting. This paper will present the design and development of the client system based on CSS, as well as upgrades that are under research including EPICS Qt framework as a client replacement for CSS and upgrading the archiver engine to a scalable and higher performance engine.